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The new sockets are T20 styles with higher temperature requirements than the S8 sockets used in most North American cars. They consist of two parts assembled by ultrasonic welding. The connectors are part of Empire’s 2.8 In-Line connector series. Empire supplies wire harnesses using the lamp sockets and connectors to automotive Tier 1’s and OEMs.

Benefits Gained

Sockets in Zytel® HTN PPA in Low Outgassing.

Tests show that the Zytel® HTN PPA resin used by Empire has exceptionally low out-gassing, which limits film formation on lighting lenses to maintain light output over time.

High Productivity. Both Zytel® HTN PPA and Crastin® PBT allow Empire to mold high-quality parts on fast cycles with high yield. In addition, Empire can use water for mold temperature control in processing the Zytel® HTN grade selected.

Materials Selected and Why

For the T20 lamp sockets, Empire chose a toughened, glass-reinforced grade of DuPont™ Zytel® HTN PPA that provides a combination of high-temperature resistance, strength, toughness and processibility while allowing the use of water for mold temperature control. DuPont™ Zytel® HTN high performance polyamide resins are engineered for extremes for demanding environments.

The portfolio includes both Zytel® HTN PPA grades for heat, chemical and moisture resistance and Zytel® HTN structural grades. For Empire’s 2.8 In-Line connector series, a hydrolysis-resistant, glass-reinforced grade of DuPont™ Crastin® PBT delivers a combination of dimensional stability, an excellent balance of resistance to terminal pull out and impact, and high flow for easy molding plus outstanding hydrolysis resistance.